EP2307766B1 - Transmission gear ratio changing without disassembly for a work machine - Google Patents

Transmission gear ratio changing without disassembly for a work machine Download PDF

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Publication number
EP2307766B1
EP2307766B1 EP08779973.0A EP08779973A EP2307766B1 EP 2307766 B1 EP2307766 B1 EP 2307766B1 EP 08779973 A EP08779973 A EP 08779973A EP 2307766 B1 EP2307766 B1 EP 2307766B1
Authority
EP
European Patent Office
Prior art keywords
shaft
gear
idler
output
input
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP08779973.0A
Other languages
German (de)
French (fr)
Other versions
EP2307766A4 (en
EP2307766A1 (en
Inventor
Herbert Allen Larsen
Raymond Donald Meek
Roman Cisek
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Deere and Co
Original Assignee
Deere and Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Deere and Co filed Critical Deere and Co
Publication of EP2307766A1 publication Critical patent/EP2307766A1/en
Publication of EP2307766A4 publication Critical patent/EP2307766A4/en
Application granted granted Critical
Publication of EP2307766B1 publication Critical patent/EP2307766B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/031—Gearboxes; Mounting gearing therein characterised by covers or lids for gearboxes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
    • F16H3/001—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion convertible for varying the gear-ratio, e.g. for selecting one of several shafts as the input shaft
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H2057/02039—Gearboxes for particular applications
    • F16H2057/02043—Gearboxes for particular applications for vehicle transmissions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H2057/02039—Gearboxes for particular applications
    • F16H2057/02043—Gearboxes for particular applications for vehicle transmissions
    • F16H2057/02056—Gearboxes for particular applications for vehicle transmissions for utility vehicles, e.g. tractors or agricultural machines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
    • F16H2057/0235—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly specially adapted to allow easy accessibility and repair
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/19—Gearing
    • Y10T74/19219—Interchangeably locked
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/19—Gearing
    • Y10T74/19219—Interchangeably locked
    • Y10T74/19223—Disconnectable counter shaft

Definitions

  • the present invention relates to a transmission for a vehicle, in particular an agricultural tractor.
  • DE 41 02 084 A1 discloses a transmission apparatus for four-wheel drive. It includes a transfer mechanism for adjusting for the difference between rotating forces applied to front and rear wheels of a vehicle.
  • a differential gear is coupled with a transmission, and the transfer mechanism is coupled with the differential gear.
  • An annular oil sealing portion is provided on a shaft of the transfer mechanism to partition and separate the transfer mechanism from the differential gear.
  • a vehicle such as an agricultural tractor may be driven with motive force taking several different forms, such as a rear wheel drive, four wheel drive (4WD), mechanical front wheel drive (MFWD), track-type drive, etc.
  • a rear wheel drive such as a rear wheel drive, four wheel drive (4WD), mechanical front wheel drive (MFWD), track-type drive, etc.
  • 4WD four wheel drive
  • MFWD mechanical front wheel drive
  • track-type drive etc.
  • the front wheel drive typically is not full time, and an electronic switch in the operator's station is used to switch between rear wheel drive and mechanical front wheel drive mode.
  • a mechanical front wheel drive agricultural tractor may include an internal combustion (IC) engine which provides input power to a transmission, which in turn is coupled with and drives the rear axles through a rear end differential.
  • the transmission may also include an output shaft, typically facing in the forward direction, which connects via a drive shaft or the like with the mechanical front wheel drive at the front end of the agricultural tractor.
  • An operator may order a new mechanical front wheel drive equipped agricultural tractor with a selected tire combination between the front and rear tires, or may desire to change to a different tire combination for some reason.
  • the transmission may need to have a different gear ratio for the output shaft to the mechanical front wheel drive.
  • Conventional transmissions with an output shaft for a mechanical front wheel drive typically do no allow the gear ratio to be easily changed, either during initial assembly or in a retrofit situation. It is thus necessary to use a different transmission with a different gear ratio, or disassemble the transmission and replace the gear set coupled with the mechanical front wheel drive output shaft. Either solution is not optimal for efficiency and cost.
  • a transmission for a vehicle comprises an idler arrangement which includes an idler shaft and a drive gear mounted to the idler shaft.
  • the drive gear is axially movable and rotationally fixed relative to the idler shaft.
  • a housing includes an access opening and an access cover over the access opening.
  • the access cover rotatably carries one end of the idler shaft.
  • the access opening is sized and shaped to allow the drive gear to be moved through and out of the housing.
  • a portion 10 of a vehicle in the form of an agricultural tractor, particularly the rear end drive train of the agricultural tractor.
  • an agricultural tractor it is possible that the vehicle could be in the form of a different type of vehicle, such as a construction tractor or forestry machine.
  • the agricultural tractor includes a transmission 12 which is coupled with a rear end differential 14, which in turn drives a pair of rear axles 16.
  • Each rear axle 16 includes an outboard hub 18 to which a respective rear drive wheel (not shown) is mounted.
  • Transmission 12 includes a driven shaft 20 which is mechanically coupled with and receives rotational input power from internal combustion engine 22, shown schematically in Fig. 1 .
  • Driven shaft 20 transfers rotational power via appropriate gearing to differential drive shaft 24, which in turn extends from the rear of and provides rotational input power to differential rear end gear set 26 (see Fig. 2 ).
  • Driven shaft 20 extends through and is rotatably carried by housing 28, which likewise houses and rotatably carries a number of other components. Also positioned within and carried by housing 28 is an idler arrangement 30 which mechanically interconnects a power input 32 and a power output 34.
  • power input 32 includes an input shaft 36 and an input gear 38 carried by input shaft 36.
  • input shaft 36 is in fact the differential drive shaft 24, but could be a different rotatable drive shaft providing input power to idler arrangement 30.
  • Input shaft 36 receives input power from driven shaft 20 coupled with internal combustion engine 22.
  • power input 32 and “power output 34” are used relative to idler arrangement 30. That is, power input 32 provides input power to idler arrangement 30, and power output 34 receives and provides power output from idler arrangement 30.
  • Power output 34 similarly includes an output shaft 40 and an output gear 42 carried by output shaft 40.
  • output shaft 40 extends through housing 28 and provides rotational output power to a mechanical front wheel drive at a front axle of agricultural tractor.
  • Output gear 42 is clutched to output shaft 40 so that output gear 42 positively rotates with output shaft 40 when the mechanical front wheel drive is engaged by actuation of a switch (not shown) in the operator's station.
  • Idler arrangement 30 (see Figs. 3 and 4 ) includes an idler shaft 44, driven gear 46 and drive gear 48.
  • Driven gear 46 is rigidly fixed to idler shaft 44 and rotates therewith during operation.
  • Drive gear 48 has an inside diameter which is splined to the outside diameter of idler shaft 44 when in an installed position.
  • Drive gear 48 abuts against a shoulder 50 on idler shaft 44 for retention in one axial direction, and is retained by a snap ring 52 in the other axial direction (with a thrust washer 53 between snap ring 52 and drive gear 48).
  • An access cover 54 forms part of housing 28, and fits within an access opening 56 formed in housing 28.
  • Access cover 54 carries a pair of annular seals 58 which seal with the inside diameter of access opening 56.
  • Access cover 54 is fastened to housing 28 using three bolts 60, or other suitable fastening technique.
  • Access cover 54 also defines a bearing support which supports a bearing 62, which in turn has an inner race which rotatably carries an outboard end of idler shaft 44.
  • the outboard end of idler shaft 44 has a chamfer 64 which provides easier piloting of idler shaft 44 into the inner race of bearing 62.
  • I/O input/output
  • idler arrangement 30 Under certain conditions of operation of the agricultural tractor, such as a particular tire combination, it may be desirable and/or necessary to change the input/output (I/O) ratio of idler arrangement 30, thereby changing the rotational drive speed of output shaft 40 to the mechanical front wheel drive.
  • I/O input/output
  • Each of drive gears 48 and 66 has the same inside diameter and same spline configuration allowing coupling with the exterior splines on idler shaft 44.
  • Drive gears 48 and 66 differ from each other in that they have a different number of teeth and a slightly different overall outside diameter.
  • drive gear 48 has thirty teeth and drive gear 66 has thirty-one teeth, with an overall outside diameter change of less than one millimeter.
  • drive gear 66 for drive gear 48, or vice versa
  • bolts 60 are removed from access cover 54, and access cover 54 is slid in an axial direction out of access opening 56.
  • Bearing 62 is pressed within access cover 54 and is removed with access cover 54 from idler shaft 44.
  • Snap ring 52 and thrust washer 53 are then removed from idler shaft 44 and withdrawn through access opening 56.
  • Drive gear 48 is slid in an axial direction so that the interior splines disengage from the exterior splines on idler shaft 44.
  • the overall outside diameter of drive gear 48 is slightly less than the inside diameter of access opening 56 so that drive gear 48 may be withdrawn through access opening 56.
  • Drive gear 66 is then moved through access opening 56 and slid in an axial direction onto idler shaft 44 until seated against shoulder 50.
  • the I/O ratio of idler arrangement 30 to output shaft 40 may be changed.
  • conventional transmissions it would be necessary to remove transmission 12 from rear end differential 14 and use a different transmission or disassemble and then reassemble the various components and gears from the back side of transmission 12 to change the I/O ratio of output shaft 40.
  • the I/O ratio may be quickly and easily changed without having to disassemble transmission 12 from rear end differential 14, or disassemble other components within transmission 12.
  • the present invention therefore provides a fast and easy way to change the I/O ratio of output shaft 40 to the mechanical front wheel drive on the front axle.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Details Of Gearings (AREA)
  • Arrangement And Driving Of Transmission Devices (AREA)

Description

  • The present invention relates to a transmission for a vehicle, in particular an agricultural tractor.
  • DE 41 02 084 A1 discloses a transmission apparatus for four-wheel drive. It includes a transfer mechanism for adjusting for the difference between rotating forces applied to front and rear wheels of a vehicle. A differential gear is coupled with a transmission, and the transfer mechanism is coupled with the differential gear. An annular oil sealing portion is provided on a shaft of the transfer mechanism to partition and separate the transfer mechanism from the differential gear.
  • A vehicle such as an agricultural tractor may be driven with motive force taking several different forms, such as a rear wheel drive, four wheel drive (4WD), mechanical front wheel drive (MFWD), track-type drive, etc. In the case of a mechanical front wheel drive equipped agricultural tractor, the front wheel drive typically is not full time, and an electronic switch in the operator's station is used to switch between rear wheel drive and mechanical front wheel drive mode.
  • A mechanical front wheel drive agricultural tractor may include an internal combustion (IC) engine which provides input power to a transmission, which in turn is coupled with and drives the rear axles through a rear end differential. The transmission may also include an output shaft, typically facing in the forward direction, which connects via a drive shaft or the like with the mechanical front wheel drive at the front end of the agricultural tractor.
  • An operator may order a new mechanical front wheel drive equipped agricultural tractor with a selected tire combination between the front and rear tires, or may desire to change to a different tire combination for some reason. Depending on the selected tire combination, the transmission may need to have a different gear ratio for the output shaft to the mechanical front wheel drive. Conventional transmissions with an output shaft for a mechanical front wheel drive typically do no allow the gear ratio to be easily changed, either during initial assembly or in a retrofit situation. It is thus necessary to use a different transmission with a different gear ratio, or disassemble the transmission and replace the gear set coupled with the mechanical front wheel drive output shaft. Either solution is not optimal for efficiency and cost.
  • What is needed in the art is a transmission for a vehicle which may be modified to provide a different gear ratio to the mechanical front wheel drive output shaft, without having to completely disassemble or replace the transmission.
  • This and other objects are achieved by the present invention, wherein a transmission for a vehicle is provided. The transmission comprises an idler arrangement which includes an idler shaft and a drive gear mounted to the idler shaft. The drive gear is axially movable and rotationally fixed relative to the idler shaft. A housing includes an access opening and an access cover over the access opening. The access cover rotatably carries one end of the idler shaft. The access opening is sized and shaped to allow the drive gear to be moved through and out of the housing.
  • For a complete understanding of the objects, techniques, and structure of the invention reference should be made to the following detailed description and accompanying drawings, wherein similar components are designated by identical reference numerals:
    • Fig. 1
    is a perspective view of an embodiment of a transmission according to the present invention used in an agricultural tractor,
    Fig. 2
    is side sectional view through the transmission shown in Fig. 1, taken along line 2-2,
    Fig. 3
    is an enlarged view of detail A of the transmission shown in Fig. 2, and
    Fig. 4
    is an exploded perspective view of the idler arrangement of the transmission shown in Fig. 3.
  • Referring now to the drawings, and more particularly to Figs. 1 and 2, there is shown a portion 10 of a vehicle in the form of an agricultural tractor, particularly the rear end drive train of the agricultural tractor. Although shown as an agricultural tractor, it is possible that the vehicle could be in the form of a different type of vehicle, such as a construction tractor or forestry machine.
  • The agricultural tractor includes a transmission 12 which is coupled with a rear end differential 14, which in turn drives a pair of rear axles 16. Each rear axle 16 includes an outboard hub 18 to which a respective rear drive wheel (not shown) is mounted.
  • Transmission 12 includes a driven shaft 20 which is mechanically coupled with and receives rotational input power from internal combustion engine 22, shown schematically in Fig. 1. Driven shaft 20 transfers rotational power via appropriate gearing to differential drive shaft 24, which in turn extends from the rear of and provides rotational input power to differential rear end gear set 26 (see Fig. 2).
  • Driven shaft 20 extends through and is rotatably carried by housing 28, which likewise houses and rotatably carries a number of other components. Also positioned within and carried by housing 28 is an idler arrangement 30 which mechanically interconnects a power input 32 and a power output 34. Referring to Figs. 2 and 3, power input 32 includes an input shaft 36 and an input gear 38 carried by input shaft 36. In the embodiment shown, input shaft 36 is in fact the differential drive shaft 24, but could be a different rotatable drive shaft providing input power to idler arrangement 30. Input shaft 36 receives input power from driven shaft 20 coupled with internal combustion engine 22.
  • The terms "power input 32" and "power output 34" are used relative to idler arrangement 30. That is, power input 32 provides input power to idler arrangement 30, and power output 34 receives and provides power output from idler arrangement 30.
  • Power output 34 similarly includes an output shaft 40 and an output gear 42 carried by output shaft 40. In the embodiment shown, output shaft 40 extends through housing 28 and provides rotational output power to a mechanical front wheel drive at a front axle of agricultural tractor. Output gear 42 is clutched to output shaft 40 so that output gear 42 positively rotates with output shaft 40 when the mechanical front wheel drive is engaged by actuation of a switch (not shown) in the operator's station.
  • Idler arrangement 30 (see Figs. 3 and 4) includes an idler shaft 44, driven gear 46 and drive gear 48. Driven gear 46 is rigidly fixed to idler shaft 44 and rotates therewith during operation. Drive gear 48 has an inside diameter which is splined to the outside diameter of idler shaft 44 when in an installed position. Drive gear 48 abuts against a shoulder 50 on idler shaft 44 for retention in one axial direction, and is retained by a snap ring 52 in the other axial direction (with a thrust washer 53 between snap ring 52 and drive gear 48).
  • An access cover 54 forms part of housing 28, and fits within an access opening 56 formed in housing 28. Access cover 54 carries a pair of annular seals 58 which seal with the inside diameter of access opening 56. Access cover 54 is fastened to housing 28 using three bolts 60, or other suitable fastening technique.
  • Access cover 54 also defines a bearing support which supports a bearing 62, which in turn has an inner race which rotatably carries an outboard end of idler shaft 44. The outboard end of idler shaft 44 has a chamfer 64 which provides easier piloting of idler shaft 44 into the inner race of bearing 62.
  • Under certain conditions of operation of the agricultural tractor, such as a particular tire combination, it may be desirable and/or necessary to change the input/output (I/O) ratio of idler arrangement 30, thereby changing the rotational drive speed of output shaft 40 to the mechanical front wheel drive. In the embodiment shown, it is possible to select between a plurality of drive gears on idler arrangement 30, including drive gear 48 and an additional drive gear 66 (see Figs. 3 and 4). Each of drive gears 48 and 66 has the same inside diameter and same spline configuration allowing coupling with the exterior splines on idler shaft 44. Drive gears 48 and 66 differ from each other in that they have a different number of teeth and a slightly different overall outside diameter. In the embodiment shown, drive gear 48 has thirty teeth and drive gear 66 has thirty-one teeth, with an overall outside diameter change of less than one millimeter.
  • To exchange drive gear 66 for drive gear 48, or vice versa, bolts 60 are removed from access cover 54, and access cover 54 is slid in an axial direction out of access opening 56. Bearing 62 is pressed within access cover 54 and is removed with access cover 54 from idler shaft 44. Snap ring 52 and thrust washer 53 are then removed from idler shaft 44 and withdrawn through access opening 56. Drive gear 48 is slid in an axial direction so that the interior splines disengage from the exterior splines on idler shaft 44. The overall outside diameter of drive gear 48 is slightly less than the inside diameter of access opening 56 so that drive gear 48 may be withdrawn through access opening 56. Drive gear 66 is then moved through access opening 56 and slid in an axial direction onto idler shaft 44 until seated against shoulder 50. Snap ring 52 and thrust washer 53 are reinstalled on idler shaft 44, and access cover 54 is installed into access opening 56 and bolted to housing 28. During the insertion of access cover 54 into access opening 56, chamfer 64 self-centers idler shaft 44 within the inner race of bearing 62.
  • Using the present invention as described above, the I/O ratio of idler arrangement 30 to output shaft 40 may be changed. With conventional transmissions, it would be necessary to remove transmission 12 from rear end differential 14 and use a different transmission or disassemble and then reassemble the various components and gears from the back side of transmission 12 to change the I/O ratio of output shaft 40. With the present invention, the I/O ratio may be quickly and easily changed without having to disassemble transmission 12 from rear end differential 14, or disassemble other components within transmission 12. The present invention therefore provides a fast and easy way to change the I/O ratio of output shaft 40 to the mechanical front wheel drive on the front axle.

Claims (7)

  1. A transmission for a vehicle, in particular an agricultural tractor, comprising an idler arrangement (30) including an idler shaft (44) and a drive gear (48, 66) mounted to said idler shaft (44), said drive gear (48, 66) being axially movable and rotationally fixed relative to said idler shaft (44); and a housing (28) including an access opening (56) and an access cover (54) over said access opening (56), said access cover (54) rotatably carrying one end of said idler shaft (44), said access opening (56) being sized and shaped to allow said drive gear (48, 66) to be moved through and out of said housing (28); said transmission further including a power input (32) including an input shaft (36) and an input gear (38) carried by said input shaft (36); a power output (34) including an output shaft (40) and an output gear (42) carried by said output shaft (40); the idler arrangement (30) mechanically interconnecting said input gear (38) and said output gear (42); said output shaft (40) can be coupled with a mechanical front wheel drive of the vehicle.
  2. The transmission according to claim 1, characterized by a snap ring (52) coupled with said idle shaft (44) and axially retaining said drive gear (48, 66) on said idler shaft (44).
  3. The transmission according to claim 1 or 2, characterized by a bearing (62) carried by said access cover (54), said bearing (62) rotatably carrying said idler shaft (44).
  4. The transmission according to one of claims 1 to 3, characterized in that said drive gear (48, 66) is splined to said idler shaft (44).
  5. The transmission according to one of claims 1 to 4, characterized in that said idler arrangement (30) further includes a driven gear (46) rigidly affixed to said idler shaft (44).
  6. The transmission according to one of claims 1 to 5, characterized in that said access cover (54) is mounted to said housing (28) with a plurality of bolts (60).
  7. A vehicle, in particular an agricultural tractor, comprising an internal combustion engine (22); and a transmission (12) according to one of claims 1 to 6 coupled with said internal combustion engine (22), said transmission (12) further including a power input (32) including an input shaft (36) and an input gear (38) carried by said input shaft (36); a power output (34) including an output shaft (40) and an output gear (42) carried by said output shaft (40); the idler arrangement (30) mechanically interconnecting said input gear (38) and said output gear (42); said output shaft (40) is coupled with a mechanical front wheel drive.
EP08779973.0A 2008-07-03 2008-07-03 Transmission gear ratio changing without disassembly for a work machine Not-in-force EP2307766B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2008/008272 WO2010002368A1 (en) 2008-07-03 2008-07-03 Transmission gear ratio changing without disassembly for a work machine

Publications (3)

Publication Number Publication Date
EP2307766A1 EP2307766A1 (en) 2011-04-13
EP2307766A4 EP2307766A4 (en) 2013-06-26
EP2307766B1 true EP2307766B1 (en) 2017-09-06

Family

ID=41466230

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08779973.0A Not-in-force EP2307766B1 (en) 2008-07-03 2008-07-03 Transmission gear ratio changing without disassembly for a work machine

Country Status (5)

Country Link
US (1) US8997594B2 (en)
EP (1) EP2307766B1 (en)
CN (1) CN102057188A (en)
BR (1) BRPI0822872A2 (en)
WO (1) WO2010002368A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11391360B2 (en) 2017-10-26 2022-07-19 Auto Ip Llc Inline gearbox with fast change gearing
WO2019084089A1 (en) 2017-10-26 2019-05-02 500 Group, Inc. Invertible reversible multi-application gearbox
WO2020092803A1 (en) * 2018-11-02 2020-05-07 500 Group, Inc. Inline gearbox with fast change gearing

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Publication number Priority date Publication date Assignee Title
US3486207A (en) * 1965-02-12 1969-12-30 Falk Corp Method of manufacturing a speed reducer
US3862672A (en) * 1973-07-12 1975-01-28 Eaton Corp Quick-change drive unit
US4622859A (en) * 1984-10-09 1986-11-18 Dana Corporation Transfer gear assembly
US4787267A (en) * 1986-10-07 1988-11-29 Dana Corporation Differential axle reduction gear housing
JP2964519B2 (en) 1990-01-31 1999-10-18 スズキ株式会社 Four-wheel drive transmission
FR2690114B1 (en) 1992-04-17 1998-05-07 Renault DRIVE DEVICE FOR A FOUR-DRIVE VEHICLE.
US5295413A (en) * 1992-10-14 1994-03-22 General Motors Corporation One-piece power transmission casing and a method of assembling a transmission mechanism therein
US6029532A (en) * 1997-01-31 2000-02-29 Reliance Electric Industrial Company Gearing commonality system for gear reducers
CN2521080Y (en) 2002-03-27 2002-11-20 新疆升晟股份有限公司 Independent four-drive differential transfer case in vehicle
US7121972B2 (en) * 2003-10-30 2006-10-17 Torque-Traction Technologies, Inc. Adjustable flange device for cover member in drive axle assembly
CN100396914C (en) * 2004-02-12 2008-06-25 通用电气公司 Gearbox for wind turbine

Non-Patent Citations (1)

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Title
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Also Published As

Publication number Publication date
WO2010002368A1 (en) 2010-01-07
BRPI0822872A2 (en) 2015-06-30
US20110259132A1 (en) 2011-10-27
EP2307766A4 (en) 2013-06-26
EP2307766A1 (en) 2011-04-13
US8997594B2 (en) 2015-04-07
CN102057188A (en) 2011-05-11

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